1. To find out how many puzzles 1 student would complete, divide the total number of puzzles completed by the number of students.
80 puzzles / 22 students = 3.6 puzzles. Therefore, 1 student would complete approximately 3.6 puzzles.
2. To find out how much butter you will need, you can set up a ratio.
4 tablespoons / ½ cup = 10 tablespoons / x cups.
Cross multiplying, we get:
4x = 5.
Dividing both sides by 4, we get:
x = 1.25 cups. Therefore, you will need 1.25 cups of butter.
3. To find the total cost, you need to add the sales tax to the initial cost.
Sales tax = 7.25% of $359.98 = 0.0725 * $359.98 = $26.11935 (rounded to hundredth = $26.12).
Total cost = $359.98 + $26.12 = $386.10.
4. The scale factor is calculated by dividing the size in the picture by the actual size.
10 cm (picture size) / 3 cm (actual size) = 3.3333.
Therefore, the scale factor used was approximately 3.3.
5. To find the percentage of error, subtract the estimated height from the actual height, divide it by the actual height, and multiply by 100.
(18 ft - 15 ft) / 15 ft * 100 = 3/15 * 100 = 0.2 * 100 = 20%.
Therefore, Jill's percentage of error is 20%.
1. 22 students completed 80 puzzles. How many puzzles would 1 student complete? (round to tenth)
2. Recipe uses ½ c butter, 4 tablespoons kernels, and 1 tsp salt. If you use 10 tbs kernels, how much butter will you need?
3. You buy a bench that is $359.98. Sales tax is 7.25%. What is total cost? (hundredth)
4. A real 3cm bug is drawn to be 10cm in a picture. What scale factor was used?
5. Jill estimated a room to be 18ft tall. It was actually only 15 ft tall. What is her percentage of error? (tenth)
1 answer